ImClone Systems Inc.

Eric K. Rowinsky, M.D. Dr. Rowinsky has served as a director since February 2008. Dr. Rowinsky currently is chief medical officer, a position he has held since February 2005, and executive vice president, a position he has held since December 2007, of ImClone Systems Incorporated, a wholly-owned subsidiary of Eli Lilly and Company. Dr. Rowinsky held the position of director of the Institute of Drug Development ( IDD ) at the Cancer Therapy and Research Center from 2002 to 2004 and was the director of clinical research at the IDD from 1996 to 2002. In addition, he held the SBC Endowed Chair for Early Drug Development at the IDD. From 1996 to 2006, Dr Rowinsky was also a clinical professor of medicine (division of medical oncology) at the University of Texas Health Science Center, San Antonio, Texas. Dr. Rowinsky also served as an associate professor of oncology at Johns Hopkins University from 1988 until 1996. He served on the Board of Scientific Counselors of the National Cancer Institute from 2004 to 2007. Dr. Rowinsky received a B.A. degree from New York University and an M.D. degree from the Vanderbilt University School of Medicine. Following his residency in internal medicine, he completed fellowship training in medical oncology at the Johns Hopkins University School of Medicine. There are no family relationships among any of the Company s directors or executive officers.

Mr. Zuerblis owned no shares of the Company's stock at June 30, 2008, nor did he have any options exercisable prior to August 29, 2008.

In late January 2009, Dr. Denner was interviewed by Messrs. LeBuhn, Micati and Salisbury, and Professor Mulligan was interviewed by Drs. Ando and Geltosky and, at their invitation, Dr. Ivan Horak, the Company s Executive Vice President, Research and Development and Chief Scientific Officer. At a meeting of the Governance and Nominating Committee held on January 28, 2009, the Committee determined to recommend to the Board the nominations of Dr. Denner and Professor Mulligan for election as Class I Directors at the Annual Meeting. At a meeting of the Board held later that day, the Board determined to accept the recommendation of the Governance and Nominating Committee and nominated Dr. Denner and Professor Mulligan for election as Class I Directors at the Annual Meeting. At the request of the Icahn Group, the Board committed to the Icahn Group that if, for any reason, the Board subsequently determined not to nominate both Dr. Denner and Professor Mulligan, or to nominate any persons in addition to Dr. Denner and Professor Mulligan, for election as Class I Directors at the Annual Meeting, the Company would give the Icahn Group prompt written notice thereof and the Company would take all necessary action to permit the Icahn Group to nominate persons named in a notice of nomination for election to the Board which the Icahn Group would deliver to the Company on or before the close of business on the tenth day following the date on which the Icahn Group received such written notice from the Company.